Prediction market fees
Every venue charges differently. Some charge when you buy, one charges when you're paid out, and most change with the price. Here's what each takes from $100, with the source for every number.
Fee calculator
$100 on a sports market, and your side wins.
$199.72+$6.48
$196.00
$195.00
$194.00
$193.24Kalshi, Polymarket, predict.fun and Limitless charge when you buy. Outcome charges nothing to buy and 0.14% of the payout when the market settles. Base rates, no volume or referral discounts.
Fee at every price
Taker fee as a share of what you put in. Sports markets, base rates. Outcome's is a flat share of the payout, taken at settlement.
| PRICE | OutcomeLowest | predict.fun | Limitless | Polymarket | Kalshi |
|---|---|---|---|---|---|
| 10¢ | 0.14% | 2.00% | 3.00% | 4.50% | 5.93% |
| 20¢ | 0.14% | 2.00% | 3.00% | 4.00% | 5.30% |
| 30¢ | 0.14% | 2.00% | 3.00% | 3.50% | 4.67% |
| 40¢ | 0.14% | 2.00% | 3.00% | 3.00% | 4.03% |
| 50¢ | 0.14% | 2.00% | 3.00% | 2.50% | 3.38% |
| 60¢ | 0.14% | 1.33% | 2.13% | 2.00% | 2.72% |
| 70¢ | 0.14% | 0.86% | 1.51% | 1.50% | 2.06% |
| 80¢ | 0.14% | 0.50% | 1.05% | 1.00% | 1.38% |
| 90¢ | 0.14% | 0.22% | 0.68% | 0.50% | 0.70% |
How Kalshi fees work
Takers pay 0.07 × contracts × price × (1 − price), on top of the cost of the contracts. That's 1.75¢ a contract at 50¢ and 0.63¢ at 90¢. Some series carry a multiplier; every series on this site is at 1. NBA and NFL game markets also charge resting orders a quarter of that. Nothing at settlement.
Source: Kalshi fee schedule (PDF) · Kalshi fee schedule page
How Polymarket fees work
The global exchange charges takers shares × rate × price × (1 − price). The rate is 0.05 on sports, 0.07 on crypto, 0.04 on politics and finance, and 0 on geopolitics. Makers pay nothing. Each market carries its own rate, and we read it live. Polymarket US is a separate exchange with its own schedule.
Source: Polymarket trading fees · Polymarket US fee schedule
How predict.fun fees work
Takers pay 2% × min(price, 1 − price) per share, so 2% of what you put in at 50¢ or below and less above. Makers pay nothing. An invite code takes 10% off; we don't apply it. Each market's rate is read live.
Source: predict.fun fees and limits
How Limitless fees work
Order book takers pay 3.00% to buy at 50¢ or below, tapering to 0.40% near 99¢. Selling costs 0.42% to 1.50%. Makers pay nothing. Limitless publishes a table, not a formula, so prices between its rows are interpolated.
Source: Limitless fees
How Outcome fees work
Outcome runs on Hyperliquid HIP-4. Buying costs nothing. Selling or settling is charged at Hyperliquid's spot taker rate times the market's fee scale: 0.14% of the payout today, before volume, staking or referral discounts. We read the fee scale live and checked the rate against settlement fills on Hyperliquid.
Source: Outcome fees · Hyperliquid fees
Outcome fees for Hyperliquid users
Your Hyperliquid account sets your rate. Three things move it, and they multiply: settlement fee = tier rate × (1 − staking discount) × (1 − referral discount).
| 14-DAY VOLUME | SPOT TAKER | ON OUTCOME MARKETS |
|---|---|---|
| Under $5M | 0.07% | 0.14% |
| Over $5M | 0.06% | 0.12% |
| Over $25M | 0.05% | 0.10% |
| Over $100M | 0.04% | 0.08% |
| Over $500M | 0.035% | 0.07% |
| Over $2B | 0.03% | 0.06% |
| Over $7B | 0.025% | 0.05% |
Volume is perps plus twice your spot, across all of Hyperliquid. Only fee-paying volume counts, so on outcome markets your sells and settlements count and your buys don't.
| STAKING TIER | HYPE STAKED | DISCOUNT |
|---|---|---|
| Wood | Over 10 | 5% |
| Bronze | Over 100 | 10% |
| Silver | Over 1,000 | 15% |
| Gold | Over 10,000 | 20% |
| Platinum | Over 100,000 | 30% |
| Diamond | Over 500,000 | 40% |
A referral code takes another 4% off taker fees for your first $25M of volume.
So: no discounts, 0.14%. Referral code only, 0.134%. Referral plus a Wood stake, 0.128%. Over $5M of volume with a referral, 0.115%. Those match the settlement fees we see on Hyperliquid. Every payout on this site uses the undiscounted 0.14%, the same way the other venues are shown at base rates.
Checked against each venue's fee document on 10 November 2026. Fees change. The venue's own page is the one that counts.